define('THIS_FILE', 'labels.php'); // name of labels file (this file)

if(file_exists(SEARCH_DIR.'_cloud_include_cache.php') &&
filemtime(SEARCH_DIR.'_cloud_include_cache.php')>(time()-(60*60)))
{
echo file_get_contents(SEARCH_DIR.'_cloud_include_cache.php');
}
else
{
build_cloud();
}

/**
* build_cloud builds a tag cloud from the labels files.
* It actually uses labels file size to determine font size... which does
* not necessarily coincide with number of posts for a given label.
*
* smallest file is assigned 100% font-size. largest file - 200%
* everything else is proportional in between.
*/
function build_cloud()
{
$output = '';
$files = array();
$dir = opendir(SEARCH_DIR);
$low_end=PHP_INT_MAX;
$high_end=0;
while($file = readdir($dir))
if($file != '.' && $file != '..' && $file != THIS_FILE && $file != CACHE_FILE)
{
$files[$file] = filesize(SEARCH_DIR."/".$file);
$low_end = min($low_end, $files[$file]);
$high_end = max($high_end, $files[$file]);
}
closedir($dir);
ksort($files);
foreach($files as $name=>$size)
{
$output .= "
"href="".PREFIX.
htmlentities($name)."">".
htmlentities(str_replace('.php','',$name))." ";
}
echo $output;

$fp = fopen(SEARCH_DIR.'_cloud_include_cache.html','w');
fwrite($fp, $output);
fclose($fp);
}
function get_style($low_end, $high_end, $size)
{
$net = $high_end - $low_end;
$font_size = (($size - $low_end) * 100) / $net + 100;

if(!$interval) $interval++;